Remark Code MA13 on Your EOB — Meaning & What to Do
Remittance Advice Remark Code (RARC)
What remark code MA13 means: You may be responsible for a portion under a specific program rule.
What to do about remark code MA13: Confirm this cost-share with your insurer.
Remark codes add detail to a claim decision. They appear alongside the main adjustment codes on your Explanation of Benefits or remittance notice, giving the specific reason behind remark code MA13.
Related codes
RARC MA01You have the right to appeal this Medicare decision.
RARC MA15Your claim was split for processing.
RARC M123The drug name, strength, or quantity information is missing.
RARC MA18This claim was also forwarded to your secondary insurer.
Keep reviewing your bill
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- How to Dispute a Medical Bill — Find Billing Errors Before You Pay
Frequently asked questions about Remark code MA13
What does remark code MA13 mean on my EOB?
You may be responsible for a portion under a specific program rule.
What should I do about remark code MA13?
Confirm this cost-share with your insurer.
Found this code on your bill or EOB?
Upload the document — MD Bill Check decodes every code, checks the math line by line, and explains what's worth questioning.